I'm thinking of trying fall turkey hunting, but don't have the right gun. I assume I need a barrel that could shoot shot? What would be the right barrel for my TC Hawken .54cal if I wanted to swithch to a barrel for turkey hunting? .56 cal smoothbore? Is it worth upgrading to a Green Mountain barrel? or is the 28 inch factory TC good enough for shot. Or should I just look for a real turkey gun? I know you guys have opinions...